Rocking water-grate



- (No Model.)

W. L. GILMORE & T. FLEMING.

ROCKING WATER GRATE.

No. 304,095. Patented Aug. 26, 1884.

WITNESSES %VENT0R m j I a AT'IIORNIEYSV UNITED STATES PATENT rricn.

WALTER L. GILMORE ATD THOMAS FLEMING, OF CLEVELAND, OHIO.

ROCKING WATER-GRATE.

SPECIFICATION forming part of Letters Patent No. 304,095, dated August26, 1884.

Application filed November 24, 1883. (No model.)

To aZZ whom it may concern.-

Be it known that we, WALTER L. GILMORE and THOMAS FLEMING, of Cleveland,in the county of Ouyahoga and State of Ohio, have invented certain newand useful Improvements in Rocking ater-Grates; and we do hereby declarethe following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itpertains to make and use the same.

Our invention relates to improvements in rocking water-grates; and itconsists in certain features of construction, and in combi nation ofparts hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a plan view of our improvedgrate, showing also the side pieces in which the grates are pivoted.Fig. 2 is a side elevation with a por tion of the side piece brokenaway, showing the ends of the grates.

A and A are hollow side pieces, in which the grates B and G are pivoted.These side pieces are provided with stuffing-boxes and followers a, forcompressing packingpreferably asbestus-ar0und the pivoted ends of thegrates and forming a watertight joint.

The grates C have a central bar terminating in the pivoted endsaforesaid, and are provided with fingers on either side, arrangedsubstantially as shown. These grates are hollow, having a continuouspassageway from end to end through the fingers and central bar, as shownin dotted lines and in section on the righthand bars, and that are inopen relation with the cavities or passage-ways in the side pieces.

The grates B are constructed the 'same as the grate 0, except they havefingers only on one side, and are designed to set close to the ends ofthe furnace.

Various vertical openings may be had through the grates to increase theair-spaces, as shown, wherever they can be located without interferingwith the said internal passageway.

The grates are provided with pendent arms, respectively b and c, asshown in Fig. 2. These arms may be pivotally attached to a single bar,by which they may be rocked or shaken simultaneously, or may have aseparated rod attached to each of the arms, so that each grate may beoperated independent of the other grates.

In operating the grates, the feed-water is supplied, say, through theside piece, A, and from the right-hand end. From thence it passesthrough the passage-ways in the grates into the side piece, A; fromthence say through the left-hand end-into pipes leading to the boiler.The feed-water is usually more or less heated in some manner before itreaches the grates, and the additional heat it then receives willusually raise the temperature of the feed- Water to the boiling-point,in which condition it enters the boiler. The passage of the feedwaterthrough the grates keeps them from bein g overheated and burned, so thatthese grates will remain in good condition for years under conditionsthat would burn out and destroy a solid grate in two or three months.Also, by reason of the low temperature of these grates, caused by thewater, as aforesaid, the clinkers will not adhere to them, and thus issaved another great source of annoyance in the management of furnacesfor steam-boilers.

These grates may be shaken to free the fire from ashes and to break theclinkers, or they may be tilted so far as to dump the fire in the samemanner as ordinary rocking grates.

W'hat we claim is- 1. The combination, with hollow side pieces formingwater-chambers, and stuffing-boxes secured to their inner sides, of aseries of rocking grate bars having their opposite ends j ournaled insaid stuffing-boxes, said gratebars being formed with water'passageswhich communicate with the water-passages in the hollow side pieces,substantially as set forth.

2. Booking Water-grates provided with fingers arranged substantially asshown, and interlocking with fingers of adjacent grates, and each grateprovided with a continuous waterpassage from end to end of the grate,and through all of the said fingers, and provided with pivoted bearingssecured by stuffingboxes forming water-tight joints, so that thefeed-water may be forced through the grates on its passage to theboiler, substantially as set forth.

In testimony whereof we sign this specifi eation, in the presence of twowitnesses, this 20th day of November, 1883.

WALTER L. GILMORE. THOMAS FLEMING.

Witnesses:

ALBERT E. LYNCH, CHAS. H. Donna.

